0h h1 - Martin Kool
A "little logic game" related to Takuzu and Binario: complete grids of 4 &times 4, 6 &times 6, 8 &times 8, or 10 &times 10 so that all rows and columns have an equal number of each color, but none has three adjacent tiles of the same color or shares the
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12 coins problem - Frans Faase
A classic math puzzle: given a balance scale and 12 coins, one of which is counterfeit and weighs less or more than the other coins, determine the counterfeit in 3 weightings, and tell if it is heavier or lighter. Extensions to other cases and the general
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1996 Puzzle - Ruth Carver, Math Forum
For students in grades 3-12 with a general knowledge of mathematics. Using the digits in 1996 and any operations, try to write equations that have the numbers from 0 to 100 as the answer. The answer for each number and the name of the first person to
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1997 Puzzle - Ruth Carver, Math Forum
For students in grades 3-12 with a general knowledge of mathematics. Using the digits in 1997 and any operations, try to write equations that have the numbers from 0 to 100 as the answer. The answer for each number and the name of the first person to
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1998 Puzzle - Judy Brown, Math Forum
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 1998 and the operations +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for
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1999 Puzzle - Judy Brown, Math Forum
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 1999 and the operations +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for
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2000 Puzzle - Judy Brown, Math Forum
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2000 and the operations +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for
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2001 Puzzle - Judy Brown, Math Forum
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2001 and the operations +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for
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2002 Puzzle - Judy Brown
For students in grades 3-12 with a general knowledge of mathematics. Use the
digits in the year 2002 and the operations +, -, x, ÷, sqrt (square root), ^
(raise to a power), and ! (factorial), along with grouping symbols, to write
expressions for
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2003 Puzzle - Judy Brown
For students in grades 3-12 with a general knowledge of mathematics. Use the
digits in the year 2003 and the operations +, -, x, ÷, sqrt (square root), ^
(raise to a power), and ! (factorial), along with grouping symbols, to write
expressions for
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2004 Mathematics Puzzle - Judy Ann Brown
For students in grades 3-12 with a general knowledge of mathematics. Use the
digits in the year 2004 and the operations +, -, x, ÷, sqrt (square root), ^
(raise to a power), and ! (factorial), along with grouping symbols, to write
expressions for
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2005 Mathematics Puzzle - Judy Ann Brown
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2005 and the operations +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for the
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2006 Mathematics Puzzle - Judy Ann Brown
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2006 and the operations +, -, x, ÷, ^ (raised to a power), sqrt (square root), and ! (factorial), along with grouping symbols, to write expressions for the
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2007 Mathematics Puzzle - Judy Ann Brown
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2007 and the operations +, -, x, ÷, ^ (raised to a power), sqrt (square root), and ! (factorial), along with grouping symbols, to write expressions for the
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2009 Mathematics Puzzle
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2009 and the operations +, -, x, ÷, ^ (raised to a power), sqrt (square root), and ! (factorial), along with grouping symbols, to write expressions for the
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2010 Mathematics Puzzle
For students in grades 3-12 with a general knowledge of mathematics. Use the digits in the year 2010 and the operations +, -, x, ÷, ^ (raised to a power), sqrt (square root), and ! (factorial), along with grouping symbols, to write expressions for the
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21st Century Problem Solving - Howard C. McAllister
Examples of problems solved using reliable problem solving methods; discussion of the principles of reliable problem solving; a FAQ; and an evolving encyclopedia of solved problems in mathematics, physics, and chemistry. The main focus is on pre-college
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About Rubik's Cube - Dan Knights
See the author's collection of Rubik's cubes, his solution and timing methods, thoughts on solving Rubik's Cube with your eyes closed, and suggestions for lubricating your cube and where to get them.
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A+ Click K-12 Math Quiz
A+ Click is a free online math quiz. Assess your math skills from grade 1 to grade 12; you may move up a level if you give 5 correct answers in a row. Also available in Russian.
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Active Algebra - David Womersley, Active Maths Limited
Interactive resources designed to enhance and enrich the teaching and learning of algebra. Free trial version available online; buy the CD and get a password which will remove the evaluation logo from those versions. All the activities can be used either
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Adam Up - Summerfield, James; Kordan, Samuel
Original music, chants, and other oral mnemonics that tell the adventures of Adam Up, who hated maths "... until the day his grandfather gave him a special calculator to summon The Number Crunchers. These strange bearded creatures then sing him catchy
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